查询词典 topological structure

Generally, the Fresenl lens is used for collimation and its structure is planeconvex, but the analysis and comparison of the biconvex and the plane-convex Fresenl lenses with P-W method show that the biconvex Fresenl lens is better because of its specific imaging requirement. The two kinds of the Fresenl lenses were modeled in ZEMAX to validate the conclusion.

从应用角度看，菲涅尔透镜设计属于准直系统，一般采用平面结构，但由于其成像要求的特殊性，通过运用P-W方法进行分析和比较，结果表明：曲面的设计较之于平面更具优势，并在ZEMAX中分别对2种菲涅尔透镜进行建模，验证了结果的正确性。

Based on the hypothesis of rectangle and biconvex section shape of the yarn, and different collocation between the inner warp and outer warp, thickness, section shape of the same structure being considered especially, a model for predicting the elastic property of 2.5-D woven composites was developed. To verify the elastic model, 62 samples of 2.5-D woven composites with 6 various structures were selected and the elastic properties were measured.

基于经纱矩形截面及纬纱双凸透镜截面假设，重点考虑了该结构表层经纱与内部经纱密度的不同及相同机织结构合成不同厚度和纤维束截面的情况，建立了2.5维机织复合材料的弹性性能预测模型。

The valve replacement with partly or whole mitral valve structure can improve the ventricular internal diameter, ejection fraction, cardiac index and stroke volume, thus improving cardiac function. However, bicuspid valve restenosis should be avoided through active observation.

保留部分或全部二尖瓣结构的瓣膜置换能更好地改善左心室内径大小、射血分数、心指数、每搏输出量，从而改善心脏功能，但要积极观察以避免出现二尖瓣再狭窄。

The best frame servers, most of which are 16 to 33 inches in depth, 26 to 30 in height, generally are not compatible with the bicylinder frame, due to the hidden dangers might brought by the structure.

最佳机架式服务器纵深 16 ~ 33 英寸，大部分高 26 ~ 30 英寸，而且与双柱机架一般不兼容，因为这会引起结构上的不稳定悬臂和可能的安全隐患。

Thirdly, there are bidirectional relationships between capital structure and product market competition.

第三，资本结构与产品市场竞争之间存在双向的互动关系。

Construction technology of bidirectional external prestressed steel structure and corresponding joints were introduced in this paper.

介绍了双向体外预应力钢结构及其节点设计和施工技术。

Commonwealth and the permanent headquarters are located in London, its organizational structure: 1, the Commonwealth Heads of Government Meeting; generally meets biennially. 1966 held in London in the past, since 1966, held on a rotational basis in the member states, heads of government presided over by the host country.

英联邦总部和常设机构均设在伦敦，其组织机构有：1、英联邦政府首脑会议；通常两年举行一次会议。1966年以前在伦敦举行，自1966年起轮流在成员国中举行，由东道国政府首脑主持。

The programme structure presented in this programme budget serves as the basis for the work programme for the biennium 2010–2011 and the accompanying determination of resource requirements.

这一方案预算中提出的方案结构是2010-2011两年期工作方案及相应确定资源需求的基础。

with the development of satellite navigation communication,antenna is a very important unit,performance of the satellite navigation communication system is affected by it partly.a new type of bifilar helix for satellite navigation communication system is introduced,and the traving-wave bifilar helix is analyzed briefly.meanwhile,the design and the test results are given.the results show that the antenna possesses excellent circular hemispherical beam with wide angle circular polarization and better impedance match,and has a compact structure and high integration.it can be applied in caps systems successful.

小 摘要：随着卫星导航通信技术的迅速发展，天线作为卫星导航通信系统中的重要部分，在一定程度上决定着卫星导航通信系统的性能。介绍一种用于卫星导航通信系统的双臂螺旋天线，讲述爬行波式螺旋天线的设计过程，并给出最终测试结果。结果表明，该天线具有优良的圆对称半球波束，良好的广角圆极化特性和优良的阻抗匹配特性，其结构简单、紧凑，为通信入站回传提供了一种优良的选择。

Based on the calculation results,the effects of bifurcate structure on local flow and hydraulic loss are summarized.

根据计算结果，总结了各种多通接头的分叉结构对局部流动状态和水力损失的影响，分析了最优模型。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。